Birds travelling west, for example, taking in view (5)
I believe the answer is:
geese
'birds' is the definition.
(goose is a kind of bird)
'travelling west for example taking in view' is the wordplay.
'travelling west' is a reversal indicator.
'for example' becomes 'e.g.' (short for 'exempli gratia', 'for example' in Latin).
'taking in' indicates putting letters inside.
'view' becomes 'see' (synonyms).
'eg' going around 'see' is 'eseeg'.
'eseeg' backwards is 'GEESE'.
(Other definitions for geese that I've seen before include "Protectors of city" , "Domesticated fowl" , "Large birds of the duck family" , "Farmyard creatures" , "Web-footed migratory aquatic birds" .)